	@charset "utf-8";
	
	* {
		-moz-box-sizing: border-box; 
		-webkit-box-sizing: border-box;
		 box-sizing: border-box;
	}

	input {
		border: none;
		outline: none;
	}

	.container {
		width: 1280px;
		margin: 0 auto;
		height: 100%;
		position: absolute;
		left: 50%;
		margin-left: -640px; /* 值的大小等于元素宽度的一半 1280/2 = 640 */ 
	}
	
	header {
		 height: 40%;
		 background-color: #5895e8;
		 color: #fff;
		 position: relative;
	}

	header .title{
		position: absolute;
		letter-spacing: 10px;
		font-size: 3em;
		bottom: 40px;
		width: 100%;
		text-align: center;
	}

	header .desc{
		position: absolute;
		font-size: 1.8em;
		letter-spacing: 4px;
		width: 100%;
		bottom: 110px;
		text-align: center;
	}

	.main {
		height: 45%;
	}

	.main form {
		position: absolute;
		width: 800px;
		margin-left: -400px;
		left:50%;
		top:45%;
		font-size: 16px;
		padding-left: 18%;
	}

	.main form div {
		margin-top:15px;
	}

	.main form span {
		display: inline-block;
		height: 38px;
		line-height: 38px;
		padding-left: 8px;
		width: 300px;
		border: 1px solid #ccc;
		margin-top: 5px;
	}

	.main form span label {
		width: 20%;
		color: #666;
	}
	.main form .ver-span {
		padding-left: 0;
		border: none;
		display: inline-block;
	}
	.main form .ver-span input {
		padding-left: 5px;
		width: 45%;
		border: 1px solid #ccc;
		height: 100%;
		margin: 0;
	}

	.main form .ver-span img {
		vertical-align:middle;
		height: 38px;
		width: 50%;
		margin-bottom: 5px;
		margin-left: 10px;
	}

	.main form span input {
		height: 90%;
		width: 75%;
	}

	.main form .btn {
		width: 300px;
		border: none;
		margin-top: 5px;
		background-color:  #5895e8;
		height: 38px;
		border-radius: 2px;
		color: #fff;
	}

	.main form .btn:hover {
		background-color: #5895d8;
	}

	footer {
		 height: 15%;
		 padding-top:15px;
		 border-top: 1px solid #5795e8;
		 background-color: #f9f9f9;
	}

	footer p {
		text-align: center;
		color: #aaa;
		font-family: 微软雅黑;
		font-size: 12px;
	}